"""
Category Model - ServiceManagerWeb
Categorías de tickets por tenant
"""
from sqlalchemy import String, Text, Boolean, Integer, ForeignKey, UniqueConstraint
from sqlalchemy.orm import Mapped, mapped_column, relationship
from typing import List, Optional
import uuid

from app.core.database import Base, GUID

class Category(Base):
    """Modelo de categorías de tickets (ticket_categories en BD)"""
    __tablename__ = "ticket_categories"  # ✅ CORREGIDO: nombre correcto de tabla
    
    # Campos básicos
    name: Mapped[str] = mapped_column(String(100), nullable=False)
    description: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
    
    # ✅ CORREGIDO: tenant_id es obligatorio para multi-tenancy
    tenant_id: Mapped[uuid.UUID] = mapped_column(
        GUID(),
        ForeignKey("tenants.id", ondelete="CASCADE"), 
        nullable=False  # ✅ Obligatorio
    )
    
    # ✅ AÑADIDOS: Campos de SLA según schema.sql
    color: Mapped[Optional[str]] = mapped_column(String(7), nullable=True)
    sla_response_hours: Mapped[int] = mapped_column(Integer, default=24, nullable=False)
    sla_resolution_hours: Mapped[int] = mapped_column(Integer, default=72, nullable=False)
    auto_assign_to: Mapped[Optional[uuid.UUID]] = mapped_column(
        GUID(),
        ForeignKey("users.id"),
        nullable=True
    )
    
    # Relationships
    tickets: Mapped[List["Ticket"]] = relationship("Ticket", back_populates="category")
    tenant: Mapped["Tenant"] = relationship("Tenant")
    auto_assign_user: Mapped[Optional["User"]] = relationship("User", foreign_keys=[auto_assign_to])
    
    # ✅ AÑADIDO: Constraint único por tenant (no puede haber categorías duplicadas en el mismo tenant)
    __table_args__ = (
        UniqueConstraint('tenant_id', 'name', name='uq_ticket_categories_tenant_name'),
    )

    def __repr__(self) -> str:
        return f"<Category(id={self.id}, name='{self.name}', tenant_id={self.tenant_id})>"